Need help with Email attachments in Sales Invoice Notification

Hello all,
I have set up an email trigger for when my sales invoice is submitted with a pre-configured email template and To and CC emails.

But with my sales invoice email, I also want to automatically attach and send the PDF and JPG attachments which will be Pre-uploaded by us in the Sales invoice Form.

I know we can send the email manually from the Sales invoice while attaching and selecting them but that’s not an efficient way. Also, I am not wanting to send the Print Format but the attachments.

Please help how we can solve this. Thanks in advance.